current bounds on the number of colors: 0 -- 172 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:52 2012 Optimize a model with 66650 rows, 15565 columns and 214226 nonzeros Presolve time: 0.20s Presolved: 66650 rows, 15565 columns, 214226 nonzeros Variable types: 0 continuous, 15565 integer (15565 binary) Root relaxation: objective 0.000000e+00, 639 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1068 simplex iterations) in 0.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 86 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:53 2012 Optimize a model with 33411 rows, 8169 columns and 107113 nonzeros Presolve time: 0.14s Presolved: 33411 rows, 8169 columns, 107113 nonzeros Variable types: 0 continuous, 8169 integer (8169 binary) Root relaxation: objective 0.000000e+00, 555 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (953 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:54 2012 Optimize a model with 16405 rows, 4385 columns and 52311 nonzeros Presolve time: 0.06s Presolved: 16405 rows, 4385 columns, 52311 nonzeros Variable types: 0 continuous, 4385 integer (4385 binary) Root relaxation: objective 0.000000e+00, 390 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (696 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:54 2012 Optimize a model with 7902 rows, 2493 columns and 24910 nonzeros Presolve time: 0.02s Presolved: 7902 rows, 2493 columns, 24910 nonzeros Variable types: 0 continuous, 2493 integer (2493 binary) Root relaxation: objective 0.000000e+00, 370 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (669 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:54 2012 Optimize a model with 4037 rows, 1633 columns and 12455 nonzeros Presolve time: 0.01s Presolved: 4037 rows, 1633 columns, 12455 nonzeros Variable types: 0 continuous, 1633 integer (1633 binary) Root relaxation: objective 0.000000e+00, 386 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 308 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1974 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:54 2012 Optimize a model with 1718 rows, 1117 columns and 4982 nonzeros Presolve removed 172 rows and 172 columns Presolve time: 0.00s Presolved: 1546 rows, 945 columns, 4638 nonzeros Variable types: 0 continuous, 945 integer (945 binary) Root relaxation: objective 0.000000e+00, 178 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (724 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:54 2012 Optimize a model with 2491 rows, 1289 columns and 7473 nonzeros Presolve time: 0.01s Presolved: 2491 rows, 1289 columns, 7473 nonzeros Variable types: 0 continuous, 1289 integer (1289 binary) Root relaxation: objective 0.000000e+00, 394 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 270 - 0.00000 - - 0s 0 0 0.00000 0 424 - 0.00000 - - 1s 0 0 0.00000 0 456 - 0.00000 - - 1s 0 0 0.00000 0 424 - 0.00000 - - 1s 0 0 0.00000 0 429 - 0.00000 - - 2s 0 0 0.00000 0 427 - 0.00000 - - 2s 0 0 0.00000 0 420 - 0.00000 - - 3s 0 0 0.00000 0 428 - 0.00000 - - 3s 0 0 0.00000 0 433 - 0.00000 - - 4s 0 0 0.00000 0 430 - 0.00000 - - 4s 0 2 0.00000 0 418 - 0.00000 - - 4s Cutting planes: Zero half: 44 Explored 3 nodes (30991 simplex iterations) in 4.74 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:50:59 2012 Optimize a model with 3264 rows, 1461 columns and 9964 nonzeros Presolve time: 0.01s Presolved: 3264 rows, 1461 columns, 9964 nonzeros Variable types: 0 continuous, 1461 integer (1461 binary) Root relaxation: objective 0.000000e+00, 397 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s 0 0 0.00000 0 407 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 1s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 0 0.00000 0 238 - 0.00000 - - 2s 0 0 0.00000 0 240 - 0.00000 - - 2s 0 0 0.00000 0 244 - 0.00000 - - 2s 0 0 0.00000 0 234 - 0.00000 - - 3s 0 0 0.00000 0 224 - 0.00000 - - 3s 0 0 0.00000 0 230 - 0.00000 - - 3s 0 0 0.00000 0 312 - 0.00000 - - 4s 0 0 0.00000 0 234 - 0.00000 - - 4s 0 2 0.00000 0 234 - 0.00000 - - 4s 3 3 0.00000 2 399 - 0.00000 - 776 5s 605 45 0.00000 12 306 - 0.00000 - 80.0 10s 611 49 0.00000 5 277 - 0.00000 - 79.2 15s 706 68 0.00000 24 272 - 0.00000 - 154 20s 1154 28 infeasible 25 - 0.00000 - 170 25s 1644 26 infeasible 29 - 0.00000 - 173 30s 2120 18 0.00000 28 302 - 0.00000 - 175 35s Cutting planes: Zero half: 20 Explored 2245 nodes (440723 simplex iterations) in 36.52 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5